Basilisk

A fabulous serpent, or dragon. The ancients alleged that its hissing would drive away all other serpents, and that its breath, and even its look, was fatal. See Cockatrice.

A lizard of the genus Basiliscus, belonging to the family Iguanidae.

A large piece of ordnance, so called from its supposed resemblance to the serpent of that name, or from its size.

small crested arboreal lizard able to run on its hind legs; of tropical America